Wood-pulp machinery.



H. F. STOHRER.

WOOD PULP MACHINERY.

APPLICATION man ras. a. |915.

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H. F. STORRER.

WOOD PULP MACHINERY.

APPLICATION FILED FEB. s. I9I5.

Patented Dec. 14, 1915.

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HERMANN F. STOBRER, F NEW YORK, N. Y.

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Specification of Letters Patent.

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Application led February 3, 1915. Serial No. 5,949.

To all whom t may concern Be it known that 1, HERMANN F. STORRER, a citizen of the Republic of Switzerland, andv residing in the city, county, and State of New York, have invented certain new and useful Improvements in VVood-Pulp` Machinery, of which the following `is a speciiication.

My invention relates to wood pulp machinery and more particularly to `apparatus for rolling up wet pulp from the draining machines now commonly used in connection with wood grinders. i

T he object of my invention is to provide apparatus for automatically discharging the pulp roll after it has attained predetermined size, simultaneously breaking the pulp sheet delivered from the draining machine and automatically placing-another rolling bar in position to take up the pulp sheet for the formation of a new pulp roll.

1n the accompanying drawings, Figure 1 is a side elevation of an apparatus in which my invention is embodied in one form; Figs. 2 and 3 are similar views with the op erating parts in different positions; Fig. 4 is a front elevation of the apparatus; and Fig. 5 is a plan thereof.

The web from the draining cylinder passes, with the pulp thereon as usual, be-

tween the press rolls 11 and 12, the upperV roll having the usual doctor or scraper 13 for removing any pulp which may adhere thereto. From these rolls the web is led to the idler 14 around which it passes and returns to the draining machine. At each end of the idler 14 are vertically slotted frames 15 in the slots 16 of which are guided the ends of a` rolling bar 17. The pulp from the web 10 gathers on this bar forming a pulp roll 18 which gradually lifts the bar 17 in its bearing slot 16 until it comes opposite the discharge gap 19 in each of the end frames. The discharge of the roll through this gap is automatic by reason ofthe fact that the slots 16 are out of vertical alinement with the axis of the idler 14,

with the result that the rolling bar is constantly pressedv toward the gapped side of the slot 16.

rlhe roll-detaining, trip andl automatic rolling-bar-feed mechanisml ofthe present construction are the features to which the present inventionis particularlydirected.l

The essential elementsv of this mechanismarefoundf in the pairs--of-rocking two-arm-,levers or triggers 20 and 21 at each end of the apparatus and journaled on the same axis, but one (21) fast tothe spindle 22 and the other (20) fast to the hollow spindle 23 through which 22 passes. The function of the levers 20-21 is primarily that of forming a stop gate to prevent the discharge of the pulp roll 1S until the latter has attained its full size. The function of levers 21 is first, to control the operation of the trip for the lever 20 and Second, to support the spare rolling bars and y during the building of the pulp roll on bar 17.

rll`he depending arms of levers 2O are pro vided with plates 24 which close the gaps 19 in the end frames and thus oppose the escape of the rolling bar 17 until the pulp roll thereon has reached predetermined size and the lever is tripped to permit the roll to discharge. The upper. arm of this lever has at its free end a shoe 25 which is engaged by the detent 26 during the building of the pulp roll 18. This detent forms one arm of a bell crank lever pivoted at 27 and to the other arm 28 of which is jointed a rod 29 carrying an operating weight 30. The detent 26 is held in position to engage the shoe 25 of the lever 20 by a link 31 connecting the detent with the curved end 32 of the lever 21, and the latter, during the building of the pulp roll 1S is held against movement by the weight of the spare rolling bar :e which rests in the cradle formed by the curved end 32 of the lever.

The lever 21 comprises a second curved arm 33 shaped to engage the second spare rolling bar ,1/ and temporarily detain it during the descent of the first spare bar to position upon the idler 14 when the full pulp roll 1S is discharged and a new roll is to be formed. The oscillation of the lever 21 in one direction is eifected by the weight acting thereon through rod 29, bellcrank 28-26 and link 31. It is oscillated in the opposite direction through the same harness, which comprises further the lever 34 jointed at one end to the rod 29 and pivoted at 35 with itsfree end lying in the path of the spare rolling bar a2 as it descends to position on the idler` 14. The `impingement of the rolling bar against the free end of the lever 34 lifts the rod 29 against the pullof its weight 30 and thus returns the lever 21 to its former position.

The operation ofthe mechanism is readily under-stood` Assuming the parte to bev in the position shown in Fig. 1. The pulp roll 18 is practically completed, spare rolling bar w hangs in the upper portion of the bearing slot 16 on the curved ends 32 of the levers 21. A second spare rolling bar jz/ rests partially upon the rolling bar m and partially upon the inclined shoulder 36 forming portirn of the bay 37 in the head of the end frame 15. As the pulp roll 18 increases in diameter it engages the rolling bar and lifts it from the curved arm 32 of lever 21. There is now no opposition to the pull of the weight 30 and the latter consequently throws open the detent 26 to the positicn shown in Fig. 3, and at the same time drops the scraper 38 which is suspended by the spring 39 from the bosses 40 on the rods 29. The. pulp sheet on web 10 is broken by the scraper 38 and the portion toward the roll 18 is carried away by the latter as it automatically discharges down the inclined table 4l pressing outward as it goes, the

'lower arm of the double lever 20, until the spindle 17 clears the plate 24.

The outward swing of the detent 26 under the influence of the weight 30 has carried with it, through link 31, the lower arm 32 of lever 21 and the latter is no longer in position to support the spare rolling bar m. The latter consequently passes down the slot 16 bearing against the rear surface of the pulp roll 18 as the latter rolls out on the table 41. lVith this oscillation of the arm 32 of lever 21 out of the path of spare rolling bar the other arm 33 of the lever is swung inward beneath the spare bar y, and temporarily supports the latter and prevents it from rolling down the shoulder 36 and following bar into slot 16. As bar passes the belly of pulp roll 1 8 it drops down upon the free end of lever 34 thus lifting the rod 29. This not only lifts the scraper 38 from the pulp sheet on web 10 but also restores lever 21 to its original position, with arm 32 extending across or par-- tially across the head of slot 16 while arm 33 is withdrawn from the position in which bar y has been supported. The latter consequently rolls down shoulder 36 and into the head of slot 16 where it is caught by arm 32 in the position previously occupied by bar as and in readiness to feed automatically to position to form the core of a new pulp roll as soon as that formed upon the bar a2 has been discharged. The downward passage of the bar a; through slot 16 also accomplishes the return of leversv20 to normal position.- Thisis effected through a bell' crank lever pivoted at 42 on the frame 15 and having one arm 43 connected by link 44 with the lever 20. Its second arm 45 in the position (Fig-2) assumed on discharge `of the pulp roll 18, projects into the path of the sparebar as it descends the slot 16. The engagementof the arm 45 r,by the spare bar occurs while the latter is descending comparatively slowly in contact with the rear of the pulp roll 18. Consequently there is no strain incident to shock between the parts, but the lever 2O is rapidly forced back to normal position in which it is halted by the impingement of the finger 46 on arm 45 against the scat 47 formed on the lever arm 20. It is obvious that this return of the lever 2O to position occurs before the d-etent 26 has been swung back into engmgn ing position. The operations are performed in sequence by the descending spare bar a2, which first engages the arm 45 and returns the lever 2O to normal position and then dropping upon lever 34 operates the harness which throws the detent 26 into position to engage the shoe 25 of the lever 20 and thus hold the latter in position until the new pulp roll forming on thc bar ai has attained full size and is ready to discharge. lVhcreupon the cycle of operations automatically repeats.

The present arrangement permits the operator to let the pulp roll which forms on spare bar a2 attain substantially full size before he must return the rolling bar 17 to position in the bay 37. A single operator may thus attend tomore machines than it was previously possible for him to do, without danger of interrupting their operation. It might be possible to permit even a` third pulp roll, viz., the one forming on y after the latter has been fed to position to form a pulp roll core, to build without spare bars being placed in the bay 37, but this would be possible only if the engagement between the detent 26 and the shoe 25 of lever 2O were suiliciently firm 79er se to overcome the opening pull of the weight 30. In this case some such device as the opening lever 48 (Fig. 1) would be necessary, to positively break the engagement between the detent 26 and shoe 25 when the pulp roll has attained predetermined size. Here the lever 48 is rigid with the bell crank 28-26. The free end of the lever is held in such position that the surface of the roll, when the latter is of suilicient diameter, bears against the lever and as the roll increases in size, positively rocks the detent 26 out of enga gement with the shoe 25. Such an arrangement is in any event an added safeguard to insure the operation of the trip weight 30 after the load of the spare bar ac has been lifted b v the cui lineages for supporting a spare core bar in said guide frame out of contact with the growing rolll during the building of the latter, gate means for detaining said roll as it approaches full diameter and. means automatically con'- trolled by said growing roll for freeing the gate to permit the discharge of the roll when the latter has attained predetermined size.

2. A device of the character described comprising a guide frame for the core bar of a growing roll, means for supporting a spare core bar in said frame out of contact with the roll during the building of the lat ter, a pivoted gate for detaining said roll, means controlled by said spare core bar for maintaining said gate closed as the roll approaches full diameter, said spare core bar being arranged in the path of the growing roll whereby it is displaced by the latter on reaching predetermined diameter and the gate retaining means freed.

3. A device of the character described comprising a supporting roll, a stationary guide for the axial rolling bar of a growing roll resting on said supporting roll, means for supporting a spare rolling bar out of contact with the growing roll during the major portion of the growth of the latter, and means for automatically freeing said spare bar from its support when the roll has attained predetermined size.

4. A device of the character described comprising a guide for the aXial rolling bar of a growing roll, a gate obstructing the escape of the rolling bar from said guide, a detent for holding said gate in obstructing position, a tripping mechanism for freeing said detent, said tripping mechanism comprising a support for a spare rolling bar serving to prevent the operation of the trip while the spare bar is carried on said support, said spare bar lying in such position that it is lifted by the growing roll from its support when said roll attains predetermined diameter and the tripping mechanism for the detent thereby freed.

5. A device of the character described comprising a guide frame slotted to receive the bearing ends of an axial rolling bar for a growing roll, means for supporting a spare rolling bar in the upper portion of said guide frame out of contact with the growing portion of said guideslct'put pffco'ntact' with the growing roll, and means operative upon the attainment of discharge size by 'said growing roll, to shift said rocking lever to free one of said spare rolling bars while deta-ining the remainder.

7. ln a device of the character described, a guide frame slotted to receive the bearing ends of an axial rolling bar for a growing roll, a bay in the upper portion of said slot to receive a pair of spare rolling bars out of contact with the growing roll, and a two arm rocking lever engaging with one arm the lower spare bar and means for rocking said lever when the roll has attained predetermined size to free said lower rolling bar and simultaneously to bring the other arm oie-said lever into detaining engagement with the upper spare bar.

8. In a device of the character described, a slotted guide frame having a lateral dis` charge aperture for a growing roll guided in said frame, a pivoted gate lever normally closing said discharge-aperture, means for supporting a spare rolling bar in the upper portion of the guide frame, out of contact with the growing roll, a trip for freeing said gate lever when the roll has attained predetermined size, whereupon said lever is swung `from position by the discharging roll, means for simultaneously removing the support from said spare bar, whereupon the latter automatically descends said guide slot, together with means operated by said spare bar during its descent for returning the gate -lever to normal position.

9. In a device of the character described, a

slotted guide frame having a lateral discharge for a growing roll guided in said frame, a pivoted gate lever normally closing said discharge aperture, a detent for holding said lever in closing position, means for supporting a spare rolling bar in the upper portion of said guide trame, means 'for automatically tripping said detent and withdrawing the support for said spare rolling bar to permit the automatic discharge of the roll afterI it has attained predetermined diameter, together with means operated by the said spare rolling bar on its descent in the slot of said guide frame, for automatically returning said detent to position.

10. In a device of the character described, a slotted guide frame having a lateral discharge for a growing roll guided in said i'rame, a pivoted gate lever normally closing said discharge aperture, a detent for holding said lever in closing position, means for supportinga spare rolling bar in the upper portion of said guide frame, means for automatically tripping said detent and withdrawing the support for said spare rolling bar to permit the automatic discharge oit the roll after it has attained predetermined diaineter, together 'with means operated by the said -spareziolling bar on itsxdescentin the l-lO slot in said guide frame for first returning the gate lever to normal position and then moving the detent into engagement therewith.

1l. A device of the character described, comprising a supporting roll, a rolling bar resting thereon, and a stationary guide frame for said rolling bar slotted to permit the travel of the rolling bar therein on the increase ot its roll diameter and guidevvays opening from one side to the slot in the guide frame to permit the automatic discharge of the rolling bar roll therefrom after it has attained predetermined diameter, substantially as described.

12. A device of the character described, comprising a supporting roll, a rolling bar resting thereon, and a guide frame for said rolling bar slotted to permit the travel of the rolling bar therein on the increase of its roll diameter and guideivays opening` to the slotted guide frame from one side to permit the automatic discharge of the rolling bar roll after it has attained predetermined diameter, in combination With a detent device for preventing the escape of said rolling bar roll and means operated by the latter on reaching predetermined diameter for freeing said detent device.

13. A device 'of the character described, comprising a supporting roll, a rolling bar resting thereon, and a guide frame for said rolling bar slotted to permit the travel of the rolling bar therein on the increase of its roll diameter and guideways opening to the slotted guide frame from one side to permit the automatic discharge of the rolling bar roll after it has attained predetermined diameter, in combination with a cutting device and means operated on the escape of the rolling bar from its guide frame for act-uating said cutting device.

14:. A device of the character described, comprising a supporting roll, a rolling bar resting thereon, and a guide frame for said rolling bar slotted to permit the travel of the rolling bar therein on the increase of its roll diameter and guideways opening to the slotted guide trame from one side to permit the yautomatic discharge of the rolling bar roll after it has attained predetermined diameter, in combination with a detent device for preventing the escape of said rolling bar roll and means operated by the latter on reaching predetermined diameter for freeing said detent device together' with a cutting device actuated simultaneously With said detent device on the escape of the rolling bar roll from its guide frame.

15. A device of the character described, comprising a supporting roll, a rolling bar resting thereon, and a guide frame for said rolling bar slotted' to permit the travel of the rolling bar therein on the increase of its roll diameterfand' gudeways opening to the slotted guide frame from one side to permit the automatic discharge of the rolling bar roll after it has attained predetermined diameter, in combination with a detent device for preventing the escape of said rolling bar roll and means operated by the latter on reaching predetermined diameter for free ing said detent device, together with means Jfor temporarily supporting on said detent device a spare rolling'bar in position to be engaged by the rolling bar roll as the latter increases in diameter, for the purpose described.

16. A device of the character described, comprising a supporting roll, a rolling bar resting thereon, a. frame with slot bearing for said bar and apertured in communication with said slotted bearing to permit the discharge of the rolling bar therefrom, a pivoted trigger obstructing said discharge aperture, a detent controlling` said trigger and means operated by the rolling bar on attaining predetermined diameter, for freeing said detent.

17. In combination with a pulp draining machine, a rolling bar for taking up the pulp sheet from the draining machine, a slotted frame in which said rolling bar is guided during the increase in diameter of the roll formed thereon, means for automatically discharging the roll when it reaches predetermined diameter and means for automatically supplying a spare rolling bar to replace that carrying the di schargcd roll.

18. In combination with a pulp draining machine, a rolling bar for taking up the pulp sheet from the draining machine, a slotted Jframe in which said rolling bar is guided during the increase in diameter of the roll formed thereon. means for automatically discharging the roll when it reaches predetermined diameter and means for automatically supplying a spare rolling bar to replace that carrying the discharged roll, together With means for automatically cutting the pulp sheet from the draining machine on the discharge oiE the filled roll.

19. In combination With a pulp draining machine, a rolling bar for taking up the pulp sheet from the draining machine, a slotted frame in which said rolling bar is guided during the increase in diameter of the roll formed thereon. means for automatically discharging the roll when it reaches predetermined diameter and means for automatically cutting the pulp sheet from the draining machine on the discharge of the filled roll.

20. In combination With a pulp draining machine, a rolling bar Jfor taking up the pulp sheet from the draining machine, a supporting roll therefor out of vertical alinement therewith, a slotted frame in which said rolling.` bar is guided during the increase in diameter of the roll formed name to this specification, in the presence oi" thereoilhfaiid a fdischarge gldewvay opening two subscribing' Witnesses. to sai@ rame rom the si e o the axis of the rolling bar opposite to that on which HERMANN F' STORRER' the axis of the supporting roll lies, for the Witnesses: purpose described. ALBREcI-IT GROSS,

In testimony whereof have signed my CHRISTOPH CRUSIUS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

